Aftermarket blow off valve?

[Mishimoto]

For this specific application, do you guys recommend one style blowoff valve over another? Plumb back vs dual port?

We usually recommend a recirculating valve since the air leaving the blow-off valve is metered. Even though the 2.0L in the JL uses MAP-based fueling, it also is extremely sensitive to changes in airflow. As some of you saw, that loss of air can cause a CEL, possibly worse if the air/fuel ratio goes rich on shifts. The 50/50 valves are usually a good compromise between sound and performance and tuning will probably make the full vent-to-atmosphere valves work, but for now we recommend the recirculating (plumb-back) valves.

Thanks!
-Steve

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[ztobro]

We usually recommend a recirculating valve since the air leaving the blow-off valve is metered. Even though the 2.0L in the JL uses MAP-based fueling, it also is extremely sensitive to changes in airflow. As some of you saw, that loss of air can cause a CEL, possibly worse if the air/fuel ratio goes rich on shifts. The 50/50 valves are usually a good compromise between sound and performance and tuning will probably make the full vent-to-atmosphere valves work, but for now we recommend the recirculating (plumb-back) valves.

Thanks!
-Steve

Thanks for the official recommendation! Now we just need someone to post some sound clips! Is the plumb-back option noticeably louder than OEM?

 

[oceanblue2019]

Thanks for the official recommendation! Now we just need someone to post some sound clips! Is the plumb-back option noticeably louder than OEM?

Probably not as if 100% recirc it will be similar to factory from a noise perspective. The vent to atmosphere ones make the noise; and in some cases tuned to make even more noise.

 

[ztobro]

Probably not as if 100% recirc it will be similar to factory from a noise perspective. The vent to atmosphere ones make the noise; and in some cases tuned to make even more noise.

I know for a fact it will be more quiet than the dual port, since no air is getting vented to atmosphere. I just didn't know if the metal construction of the valve led to noise naturally.

 

[Aspaztikcolon]

I know for a fact it will be more quiet than the dual port, since no air is getting vented to atmosphere. I just didn't know if the metal construction of the valve led to noise naturally.

"Noise" is only made through atmospheric venting. Metal construction ensures no loss of boost should you have a boost leak

 

[ztobro]

"Noise" is only made through atmospheric venting. Metal construction ensures no loss of boost should you have a boost leak

No I'm aware of that, I was more wondering if the metal construction led to you hearing the bypass itself happening a little more compared to stock. If that makes sense. I know with the plumb back no venting is taking place... It made sense in my head when I asked it, LOL. Sorry.

 

[Aspaztikcolon]

No I'm aware of that, I was more wondering if the metal construction led to you hearing the bypass itself happening a little more compared to stock. If that makes sense. I know with the plumb back no venting is taking place... It made sense in my head when I asked it, LOL. Sorry.

Im no pro myself. After a saw this post i went to a buddy that is into turbo motors, mainly to find out if he had heard of turbosmart. He schooled me on a few things about BOVs. Venting in the long run will impede you. For every time your foot lets off, whether intensional or not, your boost goes right out the engine and the turbo needs to make it again. Think in heavy traffic when you have to feather the throttle, your just dumping the energy made and may slow you for a second. He also thinks that the 'pshhh' sound, while cool at first just becomes monotonous and annoying every ten seconds. Basically if it's not broke don't fix it. This doesn't mean i WON'T get one though

 

[ztobro]

Not a great example of how it sounds while driving, but looks like CJ Off-Road got on top of a review and install for this guy.

 

[Newyorkyan]

Not a great example of how it sounds while driving, but looks like CJ Off-Road got on top of a review and install for this guy.

Was that the dual port?

 

[Arterius2]

Was that the dual port?

Yes, if you are wanting to install plumb back, might as well just keep it stock.

 

[elf883]

Not a great example of how it sounds while driving, but looks like CJ Off-Road got on top of a review and install for this guy.

take my money

 

[Newyorkyan]

Yes, if you are wanting to install plumb back, might as well just keep it stock.

I agree, that swoosh sounds amazing!

 

[Aspaztikcolon]

Just ordered! Damn cool little jeep shits takin all my money

 

[Newyorkyan]

Just ordered! Damn cool little jeep shits takin all my money

Any promotional codes to use for a discount?

 

[Aspaztikcolon]

Any promotional codes to use for a discount?

Not that I'm aware of

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